740566669 has 4 divisors (see below), whose sum is σ = 744403996. Its totient is φ = 736729344.

The previous prime is 740566661. The next prime is 740566679. The reversal of 740566669 is 966665047.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 347337769 + 393228900 = 18637^2 + 19830^2 .

It is a cyclic number.

It is not a de Polignac number, because 740566669 - 2³ = 740566661 is a prime.

It is a super-2 number, since 2×740566669² = 1096877982467511122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (740566661) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1918374 + ... + 1918759.

It is an arithmetic number, because the mean of its divisors is an integer number (186100999).

Almost surely, 2^740566669 is an apocalyptic number.

It is an amenable number.

740566669 is a deficient number, since it is larger than the sum of its proper divisors (3837327).

740566669 is a wasteful number, since it uses less digits than its factorization.

740566669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3837326.

The product of its (nonzero) digits is 1632960, while the sum is 49.

The square root of 740566669 is about 27213.3546076187. The cubic root of 740566669 is about 904.7349911358.

The spelling of 740566669 in words is "seven hundred forty million, five hundred sixty-six thousand, six hundred sixty-nine".